题目内容
Where ________ it live?
- A.is
- B.do
- C.does
- D./
It seems to be strange to you that there is a blind spot (盲点)on the eyes. Here is an interesting experiment (实验) that can make something disappear, when one eye is open.
Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing.
Why does the letter disappear? It is because there is a blind spot on the eyes. When the image (影像) of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.
【小题1】The writer of the passage thinks that ________ there is a blind spot on the eyes.
A.few people know |
B.no one knows |
C.most people know |
D.all the people know |
A.出现 | B.远离 | C.消失 | D.靠近 |
A.your eyes are poor |
B.its image falls on the blind spot |
C.your left eye is not open |
D.you move it close to your eye |
①Hold the card
②Move the card nearer
③Close your right eye
④Write two English letters
⑤Look at the letter R
⑥Make a card
A.④⑥①②③⑤ | B.①③⑥④⑤② |
C.⑥①④③②⑤ | D.⑥④①③⑤② |
A.the blind spot can move |
B.an interesting experiment |
C.where the blind spot is |
D.there is a blind spot on the eyes |
It seems to be strange to you there is a blind spot(点) on the eyes. Here is an interesting experiment that can make something disappear, when one eye is open.
Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing.
Why does the letter disappear? It is because there is a blind spot on the eye. When the image of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.
【小题1】The writer of the passage thinks that _____ there is a blind spot on the eye.
A.few people know | B.no one knows | C.most people know | D.all the people know |
①Hold the card ②Move the card nearer ③Close your right eye
④Write two English letters ⑤Look at the letter R ⑥Make a card
A.④⑥①②③⑤ | B.①③⑥④⑤② | C.⑥①④③②⑤ | D.⑥④①③⑤② |
A.how to find the blind spot | B.an interesting experiment |
C.where the blind spot is | D.there is blind spot on the eye |